"shape memory effect surgical needles"

Details "shape memory effect surgical needles" "shape memory effect surgical needles"

A - Human Necessities

61

M

A61M 5/32 (2006.01) A61B 17/04 (2006.01) A61B 17/06 (2006.01) A61B 17/34 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2077063

- 21 - Abstract of the Disclosure Surgical needles are fabricated from a shape memory alloy. The alloy has a low temperature state, in which the needle is formable into an elongated shape to pass through an elongated tube, and a high temperature state, in which the needle forms an arc. The needle is particularly adapted for use in endoscopic surgery. A needle that has a remembered curved shape is straightened and passed to a surgical site through a cannula. It is then returned to its curved shape by heating it at the surgical site. After use, it is withdrawn through the cannula.

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